Question

Use 3.14 for the value of , and round your answers to two decimal places, where applicable. If the diameter of a circle is 15 m, what is the area of the circle?

Answer 1

if the diameter of a circle is 15, its radius is half that or 7.5.

$\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=7.5 \end{cases} A=\pi (7.5)^2\implies A=56.25\pi \implies \stackrel{\pi =3.14}{A=176.625}$